﻿204 
  Beecher 
  — 
  Natural 
  Classification 
  of 
  the 
  Trilohites. 
  

  

  34. 
  Woodward, 
  Henry, 
  1895. 
  — 
  Some 
  Points 
  in 
  the 
  Life-history 
  of 
  the 
  Crustacea 
  

  

  in 
  Early 
  Palaeozoic 
  Times. 
  Anniversary 
  Address 
  of 
  the 
  President. 
  

   Quar. 
  Jour. 
  Geol. 
  Soc, 
  London, 
  vol. 
  li. 
  

  

  35. 
  Zittel, 
  K. 
  A., 
  1881-1885 
  — 
  Handbuch 
  der 
  Palseontologie, 
  Bd. 
  II. 
  

   36. 
  1895.— 
  Grundziige 
  der 
  Pal 
  aeon 
  tologie. 
  

  

  EXPLANATION 
  OF 
  PLA.TE 
  III. 
  

  

  Figures 
  are 
  approximately 
  of 
  the 
  same 
  size 
  to 
  facilitate 
  comparison. 
  The 
  

   dorsal 
  areas 
  of 
  the 
  free 
  cheeks 
  are 
  shaded. 
  

  

  Ontogeny 
  of 
  Sao 
  hirsuta 
  Barrande. 
  

  

  Figure 
  1. 
  — 
  Protaspis 
  stage. 
  

  

  Figure 
  2. 
  — 
  Cephalon; 
  nepionic 
  stage 
  of 
  individual 
  having 
  two 
  free 
  thoracic 
  seg- 
  

   ments. 
  

  

  Figure 
  3. 
  — 
  Cephalon 
  ; 
  later 
  nepionic 
  stage 
  of 
  individual 
  having 
  eight 
  free 
  tho- 
  

   racic 
  segments. 
  

  

  Figure 
  4. 
  — 
  Cephalon 
  of 
  adult. 
  Figures 
  1-4, 
  after 
  Barrande. 
  

  

  Ontogeny 
  of 
  Dalmanites 
  socialis 
  Barrande. 
  

  

  Figure 
  5. 
  — 
  Protaspis 
  stage. 
  

  

  Figure 
  6. 
  — 
  Cephalon; 
  nepionic 
  stage 
  of 
  individual 
  having 
  three 
  free 
  thoracic 
  

  

  segments. 
  

   Figure 
  7. 
  — 
  Cephalon; 
  nepionic 
  stage 
  of 
  individual 
  having 
  seven 
  free 
  thoracic 
  

  

  segments. 
  

   Figure 
  8. 
  — 
  Cephalon 
  of 
  adult. 
  Figures 
  5-8, 
  after 
  Barrande 
  

  

  H.ypoparia. 
  

   Figure 
  9. 
  — 
  Cephalon 
  of 
  Agnostus. 
  ) 
  A 
  ,. 
  , 
  

   Figure 
  10.— 
  Cephalon 
  of 
  Microdiscus. 
  \ 
  A 
  S^osuase. 
  

  

  Figure 
  11. 
  — 
  Cephalon 
  of 
  Harpes. 
  | 
  Harpedidae. 
  

  

  Figure 
  12. 
  — 
  Cephalon 
  of 
  Trinucleus. 
  ) 
  T 
  . 
  , 
  ., 
  

   Figure 
  13.— 
  Cephalon 
  of 
  Ampyx. 
  j" 
  lni3UCleia8e 
  - 
  

  

  Opisthoparia. 
  

   Figure 
  14. 
  — 
  Cephalon 
  of 
  Atops. 
  ) 
  r 
  ,., 
  

  

  Figure 
  15.— 
  Cephalon 
  of 
  Conocoryphe. 
  J 
  ^ocorypmaje. 
  

  

  Figure 
  16. 
  — 
  Cephalon 
  of 
  Ptychoparia. 
  ) 
  ni 
  . 
  -, 
  

   Figure 
  17. 
  -Cephalon 
  of 
  Olenus. 
  \ 
  uiemaae. 
  

  

  Figure 
  18. 
  — 
  Cephalon 
  of 
  Asaphus. 
  \ 
  . 
  , 
  . 
  -, 
  

  

  Figure 
  19.— 
  Cephalon 
  of 
  Jllamus. 
  \ 
  Ai 
  - 
  a 
  P 
  nm8e 
  - 
  

  

  Figure 
  20. 
  — 
  Cephalon 
  of 
  Proetus. 
  \ 
  Proetidse. 
  

  

  Figure 
  21. 
  — 
  Cephalon 
  of 
  Bronteus. 
  

  

  Figure 
  22.— 
  Cephalon 
  of 
  Lichas. 
  

  

  Figure 
  23. 
  — 
  Cephalon 
  of 
  Acidaspis. 
  j 
  Acidaspidae. 
  

  

  Proparia. 
  

   Figure 
  24.— 
  Cephalon 
  of 
  Piacoparia. 
  \ 
  w 
  . 
  , 
  

  

  Figure 
  25.— 
  Cephalon 
  of 
  Encrinurus. 
  f 
  ^ 
  ncrmuria8e 
  - 
  

   Figure 
  26.— 
  Cephalon 
  of 
  Calymene. 
  ) 
  ', 
  . 
  -, 
  

  

  Figure 
  27.— 
  Cephalon 
  of 
  Dipleura. 
  \ 
  ^ 
  ai 
  J 
  menidse 
  - 
  

  

  Figure 
  28. 
  — 
  Cephalon 
  of 
  Gheirurus 
  (Eccoptocheile). 
  JCheirurid; 
  

  

  Figure 
  29. 
  — 
  Cephalon 
  of 
  Dalmanites. 
  ] 
  

  

  Figure 
  30.— 
  Cephalon 
  of 
  Dalmanites. 
  \ 
  

  

  Figure 
  31. 
  — 
  Cephalon 
  of 
  Chasmops. 
  \ 
  Phacopidse. 
  

  

  Figure 
  32.— 
  Cephalon 
  of 
  Acaste. 
  \ 
  

  

  Figure 
  33. 
  — 
  Cephalon 
  of 
  Phacops. 
  J 
  

  

  